point of uncertainty;  unclarified issue;  doubt
 to well (up);  to gush forth (of water);  to appear (esp. suddenly) (sweat, tears, etc.);  to feel emotions from (joy, bravery, etc.);  to hatch (esp. of parasitic insects, etc.)
 riddle;  puzzle;  enigma;  enigmatic;  mysterious
 concerning;  regarding;  per (e.g. 100 yen per person);  for every
 thought;  consideration;  thinking
 to go around;  to return;  to surround;  to concern (usu. of disputes)
 it is not possible (to, that);  there is no such thing as
 fellow;  mutual;  companion;  comrade
 contradiction;  inconsistency
 inside;  interior;  among;  within;  middle;  center;  during
 but;  however;  even;  however;  no matter how;  ... or something;  either ... or ...
 major premise (in a syllogism);  important condition;  basic premise;  something that should be obvious to all;  something that should not have to be argued
 to stream;  to flow (liquid, time, etc.);  to be washed away;  to be carried;  to drift;  to float (e.g. clouds);  to sweep (e.g. rumour, fire)
 to stop;  to stay (e.g. the night);  to contain;  to keep (in position, in place);  to record (e.g. a fact);  to retain
 to go upstream;  to go back (in time, to origin);  to date back to;  to trace back to
 storey;  story;  stairs;  stage (in chronostratigraphy);  counter for storeys and floors of a building
 grave;  solemn;  stern;  authoritative;  hard (e.g. fact)
 direction;  way;  person;  lady;  method of;  manner of;  care of ...
 if;  in case;  as for;  on the topic of;  if that's the case;  if so
 or;  either ... or;  maybe;  perhaps;  some ... and others ...;  sometimes ... and at other times ...
 itself;  one's own body;  oneself;  originally;  naturally
 in the first place;  to begin with;  after all;  anyway;  beginning;  start
 things like;  something like;  someone like;  such a thing as;  (the fact) that;  to think that
 where;  what place;  how much (long, far);  what extent
 equal;  identical;  the same;  no different (to);  just like;  equivalent
 and;  besides;  because;  since;  the thing is;  for one thing
 since some time ago;  for some time;  for quite a while
 soliloquy;  monologue;  speaking to oneself
 dangerous;  unsettled;  troubled;  disturbed;  insecure
 (a) step;  one step;  level;  stage;  small degree;  small amount
 to keep within limits (e.g. spending);  to restrain (e.g. emotions);  to control;  to hold back (e.g. an enemy);  to check;  to curb
 attention;  notice;  care;  caution;  advice;  warning
 candid advice;  frank advice;  honest opinion;  exhortation;  harsh but honest advice
 to hold one's tongue;  to shut up
 instead of;  in place of;  as a substitute for;  in exchange for;  in return for;  to make up for
 (not) anything;  (nothing) at all;  and everything else;  and all;  (not) at all;  (not) in the least
 seeming ...;  appearing ...;  -ish;  like a ...;  typical of ...
 carefree;  optimistic;  careless;  reckless;  heedless;  happy-go-lucky
 to raise one's voice;  to shout;  to yell;  to speak up (e.g. in protest);  to speak one's mind
 now that you mention it;  come to think of it;  that reminds me;  on that subject;  speaking of which
 today;  this day;  these days;  recently;  nowadays
 Metropolis (of Tokyo);  (Tokyo) Metropolitan District;  counter for cities and towns;  capital
 rumour;  rumor;  report;  hearsay;  gossip;  common talk
 knowing;  (an) acquaintance
 learning by ear;  memory of having heard something before